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UDRE Monitoring Analysis of Korean Satellite Navigation System

한국형 위성항법시스템의 UDRE 모니터링 분석

  • Received : 2014.03.31
  • Accepted : 2015.01.23
  • Published : 2015.02.01

Abstract

This paper is about analysis of UDRE monitoring method for Korean Satellite navigation system, which is the correction parameter of satellite measurements. New receiver clock bias and tropospheric delay error estimation method to make pseudo-range residual for UDRE monitoring is proposed. Saastamoinen model and Neill mapping function are used for estimate the tropospheric delay and EKF is used for estimgate the receiver clock bias. Through the satellite measurements and regional weather data received directly from the domestic is using for UDRE monitoring analysis, more suitable UDRE monitoring threshold can be deducted and it is expected to be utilized for fault detection technique of Korean Satellite Navigation System.

본 논문은 한국형 위성항법시스템의 위성궤도, 위성시계 고장 검출이 가능한 UDRE에 대한 모니터링 알고리즘 분석을 수행하였다. UDRE 모니터링을 위한 의사거리 잔차 생성방법 중 대류권 지연오차와 수신기 시계바이어스 추정방법에 대해 새로운 알고리즘을 제안한다. 대류권 지연오차는 국내 기상데이터에 더욱 적합한 Saastamoinen 모델과 Neill 매핑함수의 조합 모델을 사용하였으며, 수신기 시계 바이어스 추정방법으로는 칼만필터를 사용한 기법을 사용하였다. 국내 지역에서 직접 수신한 위성데이터와 기상데이터를 사용한 UDRE 모니터링 분석을 통해 한국지역에 더욱 적합한 UDRE 모니터링 한계치(Threshold)를 도출하고 추 후 한국형 위성항법시스템의 고장검출 기법으로 활용할 수 있을 것으로 기대한다.

Keywords

References

  1. Jongsun Ahn, Dae Hee Won, Sangkyung Sung, Moon Beom Heo, Ensung Lee, Young Jae Lee, "Analysis of GBAS Availability and Requirement with respect to Protection Level at Jeju International Airport", Journal of The Korean Society for Aeronautical and Space Sciences, Vol 39, No., 2011. 10, pp. 946-951 https://doi.org/10.5139/JKSAS.2011.39.10.946
  2. Hyung Tae Nho, Jongsun Ahn, Sangkyung Sung, Hyang-Sig Jun, Chanhong Yeom, Young Jae Lee "Research on Algorithm and Operation Boundary for Fault Detection of Onborad GNSS Receiver", Journal of The Korean Society for Aeronautical and Space Sciences, Vol. 40, No. 2 2012. 2, pp. 171-177 https://doi.org/10.5139/JKSAS.2012.40.2.171
  3. Chang Don Kee, "WADGPS (Wide Area Differential GPS) : Future Navigation System", IEEE Transactions on Aerospace and Electronic Systems, Vol.32, No.2, April, 1996, pp.795-808. https://doi.org/10.1109/7.489522
  4. Do Yun Kim, A Study on Correction Generation Algorithms for Wide Area Differential GNSS, Ph.D. Dissertation, Seoul National University, 2007.
  5. Yi-Chung Chao, Real Time Implementation of th Wide Area Augmentation System for the Global Positioning System with an Emphasis on Ionospheric Modeling, Ph.D. Dissertation, Stanford University, June, 1997.
  6. Hyung Tae Nho, Performance Analysis of the Models and Tropospheric Delay Error Estimation on Using GPS Measurements, Mater Thesis, Konkuk University, 2012
  7. Chang Don Kee, Wide Area Differential GPS (WADGPS), Ph.D. Dissertation, Stanford University, 1993.
  8. J. Kouba, "A Guide to Using International GPS Service (IGS) Products", IGS, 2003.
  9. P. Misra. and P. Enge, Global Positioning System: Signals, Measurements and Performance, Ganga-Jamuna Press, 2001.
  10. Raytheon Company, Algorithm Description Document for the User Differential Range Error (UDRE) Monitor of the Wide Area Augmentation System, FAA, Washington. DC, 2010.